bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70

Analysis

max time kernel
114s
max time network
150s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
07-11-2022 21:08

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General

Target

bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe
Size

124KB
MD5

0bd73745c902fa7858ce70bbf70faaa2
SHA1

a3c3e89286e84e637f3fcb8743333b5abcbb2047
SHA256

bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70
SHA512

2ab758696ff85920d24420979c6eb7b41de60429fc25e1a4929612f126e764a8516301c861bca371f95a18aacd48bb6e68b508f2816de2033b150541549bac7b
SSDEEP

1536:txefpXfsWZwtqC1UiHa5lY7oKb5eakEnAPJk0f9JT+z2L0f+1Rt2ZQSQPiyR/PVx:txefpUWWtqpQoKb5pSyc+z2LpLimXlGQ

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
276	Hkmdmk.exe
588	Hkmdmk.exe

Loads dropped DLL 2 IoCs

pid	Process
952	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe
952	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Hkmdmk = "C:\\Users\\Admin\\AppData\\Roaming\\Hkmdmk.exe"	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 996 set thread context of 952	996	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	27
PID 276 set thread context of 588	276	Hkmdmk.exe	29

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "374691659"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IntelliForms	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Zoom	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{7ECAED31-5F86-11ED-BAA3-DE6E3020A1A7} = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\PageSetup	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\InternetRegistry	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
952	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	588	Hkmdmk.exe
Token: SeDebugPrivilege	1184	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1704	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1704	IEXPLORE.EXE
1704	IEXPLORE.EXE
1184	IEXPLORE.EXE
1184	IEXPLORE.EXE
1184	IEXPLORE.EXE
1184	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 996 wrote to memory of 952	996	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	27
PID 996 wrote to memory of 952	996	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	27
PID 996 wrote to memory of 952	996	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	27
PID 996 wrote to memory of 952	996	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	27
PID 996 wrote to memory of 952	996	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	27
PID 996 wrote to memory of 952	996	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	27
PID 996 wrote to memory of 952	996	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	27
PID 996 wrote to memory of 952	996	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	27
PID 996 wrote to memory of 952	996	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	27
PID 952 wrote to memory of 276	952	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	28
PID 952 wrote to memory of 276	952	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	28
PID 952 wrote to memory of 276	952	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	28
PID 952 wrote to memory of 276	952	bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe	28
PID 276 wrote to memory of 588	276	Hkmdmk.exe	29
PID 276 wrote to memory of 588	276	Hkmdmk.exe	29
PID 276 wrote to memory of 588	276	Hkmdmk.exe	29
PID 276 wrote to memory of 588	276	Hkmdmk.exe	29
PID 276 wrote to memory of 588	276	Hkmdmk.exe	29
PID 276 wrote to memory of 588	276	Hkmdmk.exe	29
PID 276 wrote to memory of 588	276	Hkmdmk.exe	29
PID 276 wrote to memory of 588	276	Hkmdmk.exe	29
PID 276 wrote to memory of 588	276	Hkmdmk.exe	29
PID 588 wrote to memory of 1888	588	Hkmdmk.exe	30
PID 588 wrote to memory of 1888	588	Hkmdmk.exe	30
PID 588 wrote to memory of 1888	588	Hkmdmk.exe	30
PID 588 wrote to memory of 1888	588	Hkmdmk.exe	30
PID 1888 wrote to memory of 1704	1888	iexplore.exe	31
PID 1888 wrote to memory of 1704	1888	iexplore.exe	31
PID 1888 wrote to memory of 1704	1888	iexplore.exe	31
PID 1888 wrote to memory of 1704	1888	iexplore.exe	31
PID 1704 wrote to memory of 1184	1704	IEXPLORE.EXE	33
PID 1704 wrote to memory of 1184	1704	IEXPLORE.EXE	33
PID 1704 wrote to memory of 1184	1704	IEXPLORE.EXE	33
PID 1704 wrote to memory of 1184	1704	IEXPLORE.EXE	33
PID 588 wrote to memory of 1184	588	Hkmdmk.exe	33
PID 588 wrote to memory of 1184	588	Hkmdmk.exe	33

C:\Users\Admin\AppData\Local\Temp\bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe
"C:\Users\Admin\AppData\Local\Temp\bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:996
- C:\Users\Admin\AppData\Local\Temp\bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe
  C:\Users\Admin\AppData\Local\Temp\bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70.exe
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:952
- - C:\Users\Admin\AppData\Roaming\Hkmdmk.exe
    "C:\Users\Admin\AppData\Roaming\Hkmdmk.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:276
  - - C:\Users\Admin\AppData\Roaming\Hkmdmk.exe
      C:\Users\Admin\AppData\Roaming\Hkmdmk.exe
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:588
    - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
        
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1888
      - C:\Program Files\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files\Internet Explorer\IEXPLORE.EXE"
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:1704
        
        C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1704 CREDAT:275457 /prefetch:2
        7⤵
        Modifies Internet Explorer settings
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:1184

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Hkmdmk.exe

Filesize
124KB

MD5
0bd73745c902fa7858ce70bbf70faaa2

SHA1
a3c3e89286e84e637f3fcb8743333b5abcbb2047

SHA256
bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70

SHA512
2ab758696ff85920d24420979c6eb7b41de60429fc25e1a4929612f126e764a8516301c861bca371f95a18aacd48bb6e68b508f2816de2033b150541549bac7b

Download Submit
C:\Users\Admin\AppData\Roaming\Hkmdmk.exe

Filesize
124KB

MD5
0bd73745c902fa7858ce70bbf70faaa2

SHA1
a3c3e89286e84e637f3fcb8743333b5abcbb2047

SHA256
bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70

SHA512
2ab758696ff85920d24420979c6eb7b41de60429fc25e1a4929612f126e764a8516301c861bca371f95a18aacd48bb6e68b508f2816de2033b150541549bac7b

Download Submit
C:\Users\Admin\AppData\Roaming\Hkmdmk.exe

Filesize
124KB

MD5
0bd73745c902fa7858ce70bbf70faaa2

SHA1
a3c3e89286e84e637f3fcb8743333b5abcbb2047

SHA256
bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70

SHA512
2ab758696ff85920d24420979c6eb7b41de60429fc25e1a4929612f126e764a8516301c861bca371f95a18aacd48bb6e68b508f2816de2033b150541549bac7b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\BIEJ07L3.txt

Filesize
602B

MD5
62a9efbf7488d19d58b592edcaa7982c

SHA1
09ddf855f735d93f14af518dc284feae5eab870a

SHA256
4db9aa8b5a28be0bf77a2807f21a48b6cd9590943b0df79903f6bf341b85a64e

SHA512
35583333ed6693d728aca1282a6914bbfc1132387346394f9e85f7fe50847bdb901a113a917c60f5023c6b39bbd6884f9b1aef73234e9b611decdb5234b98419

Download Submit
\Users\Admin\AppData\Roaming\Hkmdmk.exe

Filesize
124KB

MD5
0bd73745c902fa7858ce70bbf70faaa2

SHA1
a3c3e89286e84e637f3fcb8743333b5abcbb2047

SHA256
bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70

SHA512
2ab758696ff85920d24420979c6eb7b41de60429fc25e1a4929612f126e764a8516301c861bca371f95a18aacd48bb6e68b508f2816de2033b150541549bac7b

Download Submit
\Users\Admin\AppData\Roaming\Hkmdmk.exe

Filesize
124KB

MD5
0bd73745c902fa7858ce70bbf70faaa2

SHA1
a3c3e89286e84e637f3fcb8743333b5abcbb2047

SHA256
bc15a6e54145c2769e5f2f151ff4f6b935bd70954b030181c1048c200425ae70

SHA512
2ab758696ff85920d24420979c6eb7b41de60429fc25e1a4929612f126e764a8516301c861bca371f95a18aacd48bb6e68b508f2816de2033b150541549bac7b

Download Submit
memory/276-72-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/276-67-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/276-64-0x0000000000000000-mapping.dmp

Download
memory/588-77-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/588-76-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/588-70-0x000000000040B200-mapping.dmp

Download
memory/952-55-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/952-66-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/952-61-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/952-59-0x00000000760E1000-0x00000000760E3000-memory.dmp

Filesize
8KB

Download
memory/952-60-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/952-56-0x000000000040B200-mapping.dmp

Download
memory/996-58-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/996-54-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download